ColorBlender is a free online tool that automatically creates a matching palette of 6 colours based on the values entered in for the first. Not as cartographically minded as ColorBrewer but still useful if you are looking to produce a consistent colour scheme. The nice feature about this site is that you can save your color scheme and return to it later or you can export the colours to a Photoshop Color Table or as a eps file for use in Illustrator (just load up the colours as a swatch file).

By way of TANTO